File:Kishin Douji Zenki English cast credits.png

Info
If you see this over at Anime Voice-Over Wiki's Zenki page, it's because I uploaded it there (on April 3, 2018) and granted them the permission to use it.

All credit for this screenshot goes to Semerone from Kishin Douji Zenki Wikia.

Summary
Note, that some of the series' characters names have been misspelled or are incomplete in this list. This is well known among the Kishin Douji Zenki community and can be proved by listening to the audio from the original Japanese sources and transliterating the characters' Japanese names, which are also found in the manga and the games of the series.

For example, the original, Japanese source refers to the characters like this (original, Japanese name on the right):

Chiaki Enno - Enno Chiaki Zenki - Kishin Zenki (aka "Demon God Zenki") Little Zenki - Chibi Zenki Granny - Enno Saki Jukai - Enno Jukai Professor - Kyouju Kuwaori (aka "Professor Kuwaori") Kazue - Hayami Kazue Sohma Miki - Souma Miki

Note, that in Japanese, the family name goes first, so it's Chiaki Enno, Saki Enno, Jukai Enno, Kazue Hayami and Miki Souma in English.

For more information on the Kishin Douji Zenki series, please visit Kishin Douji Zenki Wikia, Semerone's (aka "ZTheGS") or AzureKnight2008's DeviantArt gallery.

All credit for this screenshot goes to Semerone. All credit for the original image goes to Kikuhide Tani, Yoshihiro Kuroiwa, Studio Deen, Kitty Films and TV Tokyo.

This screenshot was taken from the outro of Episode 50 of the Kishin Douji Zenki anime.